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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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2940 | 2940 |
2941 | 2941 |
2942 void StackCheckStub::Generate(MacroAssembler* masm) { | 2942 void StackCheckStub::Generate(MacroAssembler* masm) { |
2943 __ TailCallRuntime(Runtime::kStackGuard, 0, 1); | 2943 __ TailCallRuntime(Runtime::kStackGuard, 0, 1); |
2944 } | 2944 } |
2945 | 2945 |
2946 | 2946 |
2947 void CallFunctionStub::Generate(MacroAssembler* masm) { | 2947 void CallFunctionStub::Generate(MacroAssembler* masm) { |
2948 Label slow; | 2948 Label slow; |
2949 | 2949 |
2950 // If the receiver might be a value (string, number or boolean) check for this | 2950 // The receiver might implicitly be the global object. This is |
2951 // and box it if it is. | 2951 // indicated by passing the hole as the receiver to the call |
2952 if (ReceiverMightBeValue()) { | 2952 // function stub. |
| 2953 if (ReceiverMightBeImplicit()) { |
| 2954 Label call; |
2953 // Get the receiver from the stack. | 2955 // Get the receiver from the stack. |
2954 // +1 ~ return address | 2956 // +1 ~ return address |
2955 Label receiver_is_value, receiver_is_js_object; | |
2956 __ movq(rax, Operand(rsp, (argc_ + 1) * kPointerSize)); | 2957 __ movq(rax, Operand(rsp, (argc_ + 1) * kPointerSize)); |
2957 | 2958 // Call as function is indicated with the hole. |
2958 // Check if receiver is a smi (which is a number value). | 2959 __ CompareRoot(rax, Heap::kTheHoleValueRootIndex); |
2959 __ JumpIfSmi(rax, &receiver_is_value); | 2960 __ j(not_equal, &call, Label::kNear); |
2960 | 2961 // Patch the receiver on the stack with the global receiver object. |
2961 // Check if the receiver is a valid JS object. | 2962 __ movq(rbx, GlobalObjectOperand()); |
2962 __ CmpObjectType(rax, FIRST_JS_OBJECT_TYPE, rdi); | 2963 __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
2963 __ j(above_equal, &receiver_is_js_object); | 2964 __ movq(Operand(rsp, (argc_ + 1) * kPointerSize), rbx); |
2964 | 2965 __ bind(&call); |
2965 // Call the runtime to box the value. | |
2966 __ bind(&receiver_is_value); | |
2967 __ EnterInternalFrame(); | |
2968 __ push(rax); | |
2969 __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); | |
2970 __ LeaveInternalFrame(); | |
2971 __ movq(Operand(rsp, (argc_ + 1) * kPointerSize), rax); | |
2972 | |
2973 __ bind(&receiver_is_js_object); | |
2974 } | 2966 } |
2975 | 2967 |
2976 // Get the function to call from the stack. | 2968 // Get the function to call from the stack. |
2977 // +2 ~ receiver, return address | 2969 // +2 ~ receiver, return address |
2978 __ movq(rdi, Operand(rsp, (argc_ + 2) * kPointerSize)); | 2970 __ movq(rdi, Operand(rsp, (argc_ + 2) * kPointerSize)); |
2979 | 2971 |
2980 // Check that the function really is a JavaScript function. | 2972 // Check that the function really is a JavaScript function. |
2981 __ JumpIfSmi(rdi, &slow); | 2973 __ JumpIfSmi(rdi, &slow); |
2982 // Goto slow case if we do not have a function. | 2974 // Goto slow case if we do not have a function. |
2983 __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); | 2975 __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
2984 __ j(not_equal, &slow); | 2976 __ j(not_equal, &slow); |
2985 | 2977 |
2986 // Fast-case: Just invoke the function. | 2978 // Fast-case: Just invoke the function. |
2987 ParameterCount actual(argc_); | 2979 ParameterCount actual(argc_); |
2988 __ InvokeFunction(rdi, actual, JUMP_FUNCTION); | 2980 |
| 2981 if (ReceiverMightBeImplicit()) { |
| 2982 Label call_as_function; |
| 2983 __ CompareRoot(rax, Heap::kTheHoleValueRootIndex); |
| 2984 __ j(equal, &call_as_function); |
| 2985 __ InvokeFunction(rdi, actual, JUMP_FUNCTION); |
| 2986 __ bind(&call_as_function); |
| 2987 } |
| 2988 __ InvokeFunction(rdi, |
| 2989 actual, |
| 2990 JUMP_FUNCTION, |
| 2991 NullCallWrapper(), |
| 2992 CALL_AS_FUNCTION); |
2989 | 2993 |
2990 // Slow-case: Non-function called. | 2994 // Slow-case: Non-function called. |
2991 __ bind(&slow); | 2995 __ bind(&slow); |
2992 // CALL_NON_FUNCTION expects the non-function callee as receiver (instead | 2996 // CALL_NON_FUNCTION expects the non-function callee as receiver (instead |
2993 // of the original receiver from the call site). | 2997 // of the original receiver from the call site). |
2994 __ movq(Operand(rsp, (argc_ + 1) * kPointerSize), rdi); | 2998 __ movq(Operand(rsp, (argc_ + 1) * kPointerSize), rdi); |
2995 __ Set(rax, argc_); | 2999 __ Set(rax, argc_); |
2996 __ Set(rbx, 0); | 3000 __ Set(rbx, 0); |
2997 __ GetBuiltinEntry(rdx, Builtins::CALL_NON_FUNCTION); | 3001 __ GetBuiltinEntry(rdx, Builtins::CALL_NON_FUNCTION); |
2998 Handle<Code> adaptor = | 3002 Handle<Code> adaptor = |
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5119 __ Drop(1); | 5123 __ Drop(1); |
5120 __ ret(2 * kPointerSize); | 5124 __ ret(2 * kPointerSize); |
5121 } | 5125 } |
5122 | 5126 |
5123 | 5127 |
5124 #undef __ | 5128 #undef __ |
5125 | 5129 |
5126 } } // namespace v8::internal | 5130 } } // namespace v8::internal |
5127 | 5131 |
5128 #endif // V8_TARGET_ARCH_X64 | 5132 #endif // V8_TARGET_ARCH_X64 |
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